Per informazioni su come utilizzare perf, consulta il
manuale di perf
e le impostazioni del kernel
sysctl.
Abilita la raccolta dei dump di arresto anomalo del kernel
Nel raro caso di un kernel panic, l'attivazione della raccolta dei dump di arresto anomalo del kernel può aiutare te e l'assistenza clienti Google Cloud a determinare la causa principale. Per attivare i dump di arresto anomalo, consulta la Guida dell'utente: raccolta dei dump di arresto anomalo del kernel per COS nella documentazione open source. Questa guida dell'utente spiega come raccogliere i dump degli arresti anomali del kernel sui nodi GKE con Container-Optimized OS o con istanze Container-Optimized OS create da Compute Engine.
[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Difficile da capire","hardToUnderstand","thumb-down"],["Informazioni o codice di esempio errati","incorrectInformationOrSampleCode","thumb-down"],["Mancano le informazioni o gli esempi di cui ho bisogno","missingTheInformationSamplesINeed","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Altra","otherDown","thumb-down"]],["Ultimo aggiornamento 2025-09-04 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eperf\u003c/code\u003e tool is pre-installed on Container-Optimized OS.\u003c/p\u003e\n"],["\u003cp\u003eYou can directly execute \u003ccode\u003eperf\u003c/code\u003e commands on your \u003ccode\u003ecos\u003c/code\u003e instance via the command line.\u003c/p\u003e\n"],["\u003cp\u003eElevated permissions might be required to enable performance events, which can be achieved by using the provided command.\u003c/p\u003e\n"],["\u003cp\u003eFor guidance on utilizing \u003ccode\u003eperf\u003c/code\u003e, consult the \u003ccode\u003eperf\u003c/code\u003e manual and kernel sysctl settings.\u003c/p\u003e\n"]]],[],null,["# Use debugging tools\n\nThis page explains tools that you can use to debug\nContainer-Optimized OS.\n\nRun the `perf` tool on Container-Optimized OS\n---------------------------------------------\n\nBy default, [`perf`](https://perf.wiki.kernel.org/index.php/Main_Page)\nis installed on Container-Optimized OS. You can run `perf` on your `cos`\ninstance from your shell command line.\n\nIf you have limited privilege, you might need to enable the use of the\nperformance events system using the following command: \n\n echo -1 | sudo tee /proc/sys/kernel/perf_event_paranoid\n\nFor information on how to use perf, refer to the\n[`perf` manual](http://man7.org/linux/man-pages/man1/perf.1.html)\nand the kernel\n[sysctl](https://www.kernel.org/doc/Documentation/sysctl/kernel.txt) settings.\n\nEnable kernel crash dump collection\n-----------------------------------\n\nIn the rare event of a kernel panic, enabling kernel crash dump collection can\nhelp you and Cloud Customer Care determine the root cause. To enable crash dumps,\nsee\n[User Guide: Kernel Crash Dump Collection for COS](https://cos.googlesource.com/cos/overlays/board-overlays/+/refs/heads/master/project-lakitu/docs/kdump.md)\nin the open source documentation. This user guide explains how to collect kernel\ncrash dumps on GKE nodes with Container-Optimized OS or\nContainer-Optimized OS instances created from Compute Engine."]]
